1#!/bin/bash
2# (c) 2017, Jonathan Corbet <corbet@lwn.net>
3#           sayli karnik <karniksayli1995@gmail.com>
4#
5# This script detects files with kernel-doc comments for exported functions
6# that are not included in documentation.
7#
8# usage: Run 'scripts/find-unused-docs.sh directory' from top level of kernel
9# 	 tree.
10#
11# example: $scripts/find-unused-docs.sh drivers/scsi
12#
13# Licensed under the terms of the GNU GPL License
14
15if ! [ -d "Documentation" ]; then
16	echo "Run from top level of kernel tree"
17	exit 1
18fi
19
20if [ "$#" -ne 1 ]; then
21	echo "Usage: scripts/find-unused-docs.sh directory"
22	exit 1
23fi
24
25if ! [ -d "$1" ]; then
26	echo "Directory $1 doesn't exist"
27	exit 1
28fi
29
30cd "$( dirname "${BASH_SOURCE[0]}" )"
31cd ..
32
33cd Documentation/
34
35echo "The following files contain kerneldoc comments for exported functions \
36that are not used in the formatted documentation"
37
38# FILES INCLUDED
39
40files_included=($(grep -rHR ".. kernel-doc" --include \*.rst | cut -d " " -f 3))
41
42declare -A FILES_INCLUDED
43
44for each in "${files_included[@]}"; do
45	FILES_INCLUDED[$each]="$each"
46	done
47
48cd ..
49
50# FILES NOT INCLUDED
51
52for file in `find $1 -name '*.c'`; do
53
54	if [[ ${FILES_INCLUDED[$file]+_} ]]; then
55	continue;
56	fi
57	str=$(scripts/kernel-doc -export "$file" 2>/dev/null)
58	if [[ -n "$str" ]]; then
59	echo "$file"
60	fi
61	done
62
63